Milecastle 10 (Walbottle Dene) was a milecastle of the Roman Hadrian's Wall. It is located near to the modern village of Throckley in Tyne and Wear, northern England. Much of the milecastle lies beneath a road but partial remains of the north wall can be seen in the garden of Dene House. It has been excavated several times and its walls located, though the remains have been "considerably damaged by ploughing". Only one of the two associated turrets has been located and excavated. Construction Milecastle 10 was a long-axis milecastle with Type IV gateways. Such milecastles were thought to have been constructed by the legio XX Valeria Victrix who were based in Deva Victrix (Chester). The usually straight Hadrian's Wall changes direction in this area, making a 20 degree turn just before it crosses a Dene (valley) and heading towards the Great Hill at Heddon-on-the-Wall. The milecastle measures long north to south and east to west with walls approximately wide. The north gateway survives in the front garden of Dene House and consists of twelve foundation slabs with three stone blocks lying on top. One of the blocks is marked with an asterisk, two of them contain pivot holes for a gate and one shows signs of a lewis-hole. The southern part of the milecastle is visible only as a 0.4m high mound in a field and part of the ditch is also visible. Excavations and investigations 1864 – The north and south gateways were excavated, the centre of the milecastle lying beneath a road. The north gateway was found to stand two courses high and contained an entrance wide. A centurial stone was discovered that was inscribed with "c[entvria] Car...", this stone is now in the collection of the Black Gate Museum. 1928 – The milecastle was excavated by the North of England Excavation Committee. They uncovered part of the south west gateway which lay in a field to the south of the road. The excavation discovered that little remained of the east wall and found no evidence of any internal structures. 1966 – An English Heritage field investigation found that only the northern gateway remained visible on the surface. 1979 – Another English Heritage field investigation was carried out and recorded the foundations of part of the north wall. The foundations were 6.4m long with three blocks of the first stone course still lying on top of them.